Home / 100,830.96-151,327.08-45,431.28

Finding the Fourth Proportional to 100,830.96, 151,327.08 and 45,431.28

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Solution

The fourth proportional to 100,830.96, 151,327.08 and 45,431.28 is: 68,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,830.96 : 151,327.08 = 45,431.28 : x
  2. Step 2: Convert to fraction form
    100,830.96/151,327.08 = 45,431.28/x
  3. Step 3: Cross multiply
    100,830.96x = 151,327.08 × 45,431.28
  4. Step 4: Simplify right side
    100,830.96x = 6,874,982,943.06
  5. Step 5: Solve for x
    x = 6,874,982,943.06/100,830.96
  6. Step 6: Final answer
    x = 68,183.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.